As a refresher on PERL, implied lessons in this are:
To concatenate strings in PERL you can either embed them within the double quoted string or concat them with the period like PHP does.
Lines end in semicolons of course
If causes change from brackets and fi in BASH to parents and braces in PERL
Constants are done with “use constant”
vars are usually defined with a my like basics var – there are of course variations on this.
Print vs echo
comparisons get the double = as in php